0.7x-0.3(80+x)=-0.15(80)

Solution for 0.7x-0.3(80+x)=-0.15(80) equation:

Simplifying
0.7x + -0.3(80 + x) = -0.15(80)
0.7x + (80 * -0.3 + x * -0.3) = -0.15(80)
0.7x + (-24 + -0.3x) = -0.15(80)

Reorder the terms:
-24 + 0.7x + -0.3x = -0.15(80)

Combine like terms: 0.7x + -0.3x = 0.4x
-24 + 0.4x = -0.15(80)

Multiply -0.15 * 80
-24 + 0.4x = -12

Solving
-24 + 0.4x = -12

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '24' to each side of the equation.
-24 + 24 + 0.4x = -12 + 24

Combine like terms: -24 + 24 = 0
0 + 0.4x = -12 + 24
0.4x = -12 + 24

Combine like terms: -12 + 24 = 12
0.4x = 12

Divide each side by '0.4'.
x = 30

Simplifying
x = 30